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EMC1001 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EMC1001
기능 SMBus Temperature Sensor
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EMC1001 데이터시트, 핀배열, 회로
EMC1001
1.5°C SMBus
Temperature Sensor in
Miniature SOT-23
PRODUCT FEATURES
Datasheet
General Description
The EMC1001 is a tiny SMBus temperature sensor with
±1.5°C accuracy and two interrupts. Packaged in a
SOT23-6, the EMC1001 provides an accurate, low-cost,
low-current, solution for critical temperature monitoring
in a PC or embedded applications.
The EMC1001 generates two separate interrupts with
programmable thermal trip points. The THERM output
operates as a thermostat with programmable threshold
and hysteresis. The ALERT output can be configured
as a maskable SMBus alert with programmable
window comparator limits, or as a second THERM
output. An efficient fan control system can be created
since this output may be used to control a fan.
A power down mode extends battery life in portable
applications.
Each part number may be configured to respond to one
of four separate SMBus addresses.
Features
„ Self Contained Internal Temperature Sensor
— 0.25°C resolution
±1.5°C Accuracy 40°C to 85°C
„ Small 6-lead SOT lead-free RoHS compliant
packages
„ SMBus address selected by external resistor
— Select 1 of 4 per package, 8 addresses available
„ Maskable Interrupt using ALERT
„ One-shot Command during standby
„ Low Power, 3.0V to 3.6V Supply
— 47uA at 0.0625 Conversions per Second (Typical)
— 4.8uA in Standby (Typical)
„ SMBus 2.0 Compliant interface
„ Programmable temperature conversion rate
Applications
„ Desktop and Notebook Computers
„ Thermostats
„ Smart batteries
„ Industrial/Automotive
„ Other Electronic Systems
Simplified Block Diagram
Switching
Current
Internal
Temp Diode
10-bit
delta-sigma
ADC
EMC1001
Temperature
Register
Status Register
Address Pointer Register
Conversion Rate Register
High Limit Registers
Low Limit Registers
THERM Limit Register
THERM Hysteresis Register
Configuration Register
Interrupt Masking
SMSC EMC1001
DATASHEET
SMCLK
SMDATA
ALERT
THERM
Revision 1.6 (01-29-07)




EMC1001 pdf, 반도체, 판매, 대치품
1.5°C SMBus Temperature Sensor in Miniature SOT-23
Datasheet
Table 1.3 Absolute Maximum Ratings
PARAMETER
Supply Voltage VDD
Voltage on ALERT/THERM2, SMDATA and SMCLK pins
Voltage on any other pin
Operating Temperature Range
Storage Temperature Range
Lead Temperature Range
Package Thermal Characteristics for SOT23-6
Power Dissipation
Thermal Resistance
ESD Rating, All Pins (Human Body Model)
RATING
-0.3 to 5.0
-0.3 to 5.5
-0.3 to VDD+0.3
-25 to +125
-55 to +150
Refer to JEDEC
Spec. J-STD-020
TBD
111.5
2000
UNIT
V
V
V
°C
°C
mW @ 70oC
oC/W
V
Note:
Stresses above those listed could cause damage to the device. This is a stress rating only
and functional operation of the device at any other condition above those indicated in the
operation sections of this specification is not implied. When powering this device from
laboratory or system power supplies, it is important that the Absolute Maximum Ratings not be
exceeded or device failure can result. Some power supplies exhibit voltage spikes on their
outputs when the AC power is switched on or off. In addition, voltage transients on the AC
power line may appear on the DC output. If this possibility exists, it is suggested that a clamp
circuit be used.
Revision 1.6 (01-29-07)
4
DATASHEET
SMSC EMC1001

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EMC1001 전자부품, 판매, 대치품
1.5°C SMBus Temperature Sensor in Miniature SOT-23
Datasheet
Chapter 3 System Management Bus Interface Protocol
A host controller, such as an SMSC I/O controller, communicates with the EMC1001 via the two wire
serial interface named SMBus. The SMBus interface is used to read and write registers in the
EMC1001, which is a slave-only device. A detailed timing diagram is shown in Figure 3.1.
SMCLK
T LO W
TR
T HIGH
TF
T H D :S TA
T SU:STO
T H D :S TA
T HD:DAT T SU:DAT
T SU:STA
SMDATA
TBUF
P S S - Start Condition
S P - Stop Condition P
Figure 3.1 System Management Bus Timing Diagram
The EMC1001 implements a subset of the SMBus specification and supports Write Byte, Read Byte,
Send Byte, Receive Byte, and Alert Response Address protocols. as shown. In the tables that describe
the protocol, the “gray” columns indicate that the slave is driving the bus.
3.1
START
1
Write Byte
The Write Byte protocol is used to write one byte of data to the registers as shown below:
Table 3.1 SMBus Write Byte Protocol
SLAVE ADDRESS
7
WR
ACK
COMMAND
ACK
11 8 1
DATA
8
ACK
1
STOP
1
3.2 Read Byte
The Read Byte protocol is used to read one byte of data from the registers as shown below:
Table 3.2 SMBus Read Byte Protocol
START SLAVE ADDRESS
17
WR
1
ACK
1
COMMAND
8
ACK
1
START
1
SLAVE ADDRESS
7
RD
1
ACK
1
DATA
8
NACK
1
STOP
1
3.3
Send Byte
The Send Byte protocol is used to set the Internal Address Register to the correct Address. The Send
Byte can be followed by the Receive Byte protocol described below in order to read data from the
register. The send byte protocol cannot be used to write data - if data is to be written to a register then
the write byte protocol must be used as described in subsection above. The send byte protocol is shown
in Table 3.3.
FIELD:
START
Bits:
1
SMSC EMC1001
Table 3.3 SMBus Send Byte Protocol
SLAVE ADDR
7
WR ACK
11
REG. ADDR
8
7
DATASHEET
ACK
STOP
11
Revision 1.6 (01-29-07)

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